Home / 10,912.90-16,376.10-4,338.40

Finding the Fourth Proportional to 10,912.90, 16,376.10 and 4,338.40

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Solution

The fourth proportional to 10,912.90, 16,376.10 and 4,338.40 is: 6,510.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,912.90 : 16,376.10 = 4,338.40 : x
  2. Step 2: Convert to fraction form
    10,912.90/16,376.10 = 4,338.40/x
  3. Step 3: Cross multiply
    10,912.90x = 16,376.10 × 4,338.40
  4. Step 4: Simplify right side
    10,912.90x = 71,046,072.24
  5. Step 5: Solve for x
    x = 71,046,072.24/10,912.90
  6. Step 6: Final answer
    x = 6,510.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.